<template>
	<view class="cart-container" v-if="cart.length !== 0">
		<!-- 购物车商品列表的标题区域 -->
		<view class="cart-title">
		  <!-- 左侧的图标 -->
		  <uni-icons type="shop" size="18"></uni-icons>
		  <!-- 描述文本 -->
		  <text class="cart-title-text">购物车</text>
		</view>
		<my-address></my-address>
		 <uni-swipe-action>
			 <block v-for="(goods, i) in cart" :key="i">
			   <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
				 <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
			   </uni-swipe-action-item>
			</block>
		 </uni-swipe-action>
		 <!-- 结算区域 -->
		 <my-settle></my-settle>
	</view>
	<!-- 空白购物车区域 -->
	 <view class="empty-cart" v-else>
	   <image src="/static/cart_empty@2x.png" class="empty-img"></image>
	   <text class="tip-text">空空如也~</text>
	 </view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import { mapGetters } from 'vuex'
	import { mapState, mapMutations } from 'vuex'
	export default {
		mixins: [badgeMix],
		data() {
			return {
				 options: [{
				      text: '删除', // 显示的文本内容
				      style: {
				        backgroundColor: '#C00000' // 按钮的背景颜色
				    }
				}]
			}
		},
		computed:{
			...mapGetters('m_cart',['total']),
			// 将 m_cart 模块中的 cart 数组映射到当前页面中使用
			...mapState('m_cart', ['cart']),
		},
		onShow () {
			// 在页面刚展示的时候，设置数字徽标
			this.setBadge()
		},
		methods: {
			setBadge () {
				// 调用 uni.setTabBarBadge() 方法，为购物车设置右上角的徽标
				uni.setTabBarBadge({
					index:2,
					text: this.total.toString()
				})
			},
			...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
			// 商品的勾选状态发生了变化
			radioChangeHandler (e) {
				this.updateGoodsState(e)
			},
			// 商品的数量发生了变化
			numberChangeHandler(e) {
			   this.updateGoodsCount(e)
			},
			// 点击了滑动操作按钮
			swipeActionClickHandler(goods) {
				console.log(goods)
			  this.removeGoodsById(goods.goods_id)
			}
		}
	}
</script>

<style lang="scss" scoped>
	.cart-container {
		margin: 0;
		padding: 0;
		padding-bottom: 50px;
		.cart-title {
		  height: 40px;
		  display: flex;
		  align-items: center;
		  font-size: 14px;
		  padding-left: 5px;
		  border-bottom: 1px solid #efefef;
		  .cart-title-text {
		    margin-left: 10px;
		  }
		}
	}
	.empty-cart {
		display: flex;
		flex-direction: column;
		align-items: center;
		padding-top: 150px;
		.empty-img {
		    width: 90px;
		    height: 90px;
		  }
		.tip-text {
		    font-size: 12px;
		    color: gray;
		    margin-top: 15px;
		  }
	}

</style>
